heat transfer - movement of energy from hot object to cold
radiation - the transfer of energy through empty space
conduction - heat transfer by direct contact of particles of matter
density - measure of how much mass is in a volume of a substance
convection - heat transfer by movement of a heated fluid
convection currents - flow that transfers heat within a fluid

• Radiation

  • sunlight

• Conduction

  • heat to cold

• Convection

  • heat goes from place to place

• Convection in the Earth's Mantle

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